Sash-lock.



UNITED STATES Patented september' 29, 190e.

PATENT OFFICE.

GEORGE L. LAMB, OF NAPPANEE, INDIANA, ASSIGNOR TO CHARLES A. BAKER, OF SALEM, ILLINOIS.

sAsH-LOCK.V

SPECIFICATION forming part of Letters Patent No."739,883, dated September 29, 1903.

' Application ined June 8,1903. sentira. 160,534. (No man.)

invention consists in certain novel combi` nations of parts hereinafter set forthV and The leading object of the invention is to adapt one and the same clamping device to lock either sash in any position desired.

Other objects and effects of-the improved construction will appear in the description hereinafter detailed. v

Asheet of drawings accompanies this specification as part thereof. y

Figures 1 and 2 are fragmentary face views of one and the same side of a windowframe, illustrating by full and dotted lines the mode of manipulating and securing the respective sliding sash by means of Ithe improved sashlock. Fig. 3 is a sectional elevation of the rod-clamp on a larger scale. f Figs. 4 and 5 show, respectively, a front view and a back view of the rod-clamp on the same scale as Fig. 3, thatedge of the rod-clamp shown at the right in Figs. 1, 2, and Sbeing for convenience termed its front, and Figs. 6 and 7 are detail views of two of the clamping-levers detached.

Like reference letters and numbers refer to like parts in all the figures.

A pair of rods A and B are attached, respectively, to the lower sash at or near its bottom and to the upper sash at or near its topV and project in parallel planes toward each other, so that at the parting-rail when the window is closed, as in full lines in Figs. 1 and 2, the ends of the rods lie side by side and extend, respectively, below and above the partingrail. The lower end of the upper rod B is conveniently provided with a lifting thumb-` piece b, by which to lift the upper sash. The 5o lower sash may be provided with any approved lifter. At the level of the partingrail the housing O of the improved rod-clamp is xedly attached to a jamb of the windowframe bya pair ot` wood screws passed through perforated lugs 1 and 2. The sides of said housing C parallel with the sash maybe solid, as shown in Figs. 1 and 2, and are connected with each other by relatively low end walls 3 and 4, in front of which both rods extend, as in Fig. 3, and by a pair of spring-abutments 5 and 6, having holes through which the lower rod extends and in front of which the upper rod extends, as in Fig. 3, and preferably a central arch 7, loosely embracing said upper rod and serving other useful purposes hereinafter set forth. Sockets 8 in said side walls of the rod-clamp at the back of the latter accommodate pivot-lugs 9 at the heel end of each of four clamping-levers d,'e,f, and g, each of which has a grip-hole 10 to embrace and interlock with one of said rods A and B RSy and a slot 11, through which the other rod i freely passes in any position of the clampinglever.' It will be understood that a pair of the levers d and g are of one and the same pattern, Fig.l 6,-and the other pair e and f are of another pattern, Fig. 7, as regards the arrangement of said holes 10 and slots 11. The grip-holes 10 of the outer pair of levers d and g embrace the lower rod A, and said levers d and y are so held as to grip said rod A by a pair of short spiral springs 12 and 13, compressed between the respective levers and said abutments 5 and 6, respectively. The grip-holes of the other pair of levers e andjl embrace the upper rod B, and these levers are held in locking position bya spiral spring 14, common to both, compressed between the two levers behind said central arch 7 of the housing, which serves to mask said spring and to stop the levers whenvthey are pressed toward each other between finger and thumb .to release the rod, and lthus unlockthe upper sash. The springs 12, 13, and ltloosely embrace the respective rods A and B, which thus assist to keep the same in place.

When it is desired to raise the lower sash, as represented by dotted lines in Figul, or to lower the same, the protruding ends of the outer clamping-leversd and qare grasped between the thumb and a finger of the left hand and pressed toward each other until the lower rod A is released, when the lower sash may be freely manipulated by the right hand. If it is desired to lower theupper sash, as representedby dotted lilies in Fig. 3, or to raise the same, the thumb-piece b of the upper rod B is grasped by the left hand, so as to control the movement of the sash, and the protruding ends of the middle pair of clamping-levers e and fare grasped between the thumb and a linger of the right hand and pressed toward each other until said upper rod B is released, when the upper sash may be freely manipulated. As soon as the hand is removed from the clamping-levers they are restored to eiective position, as in Fig. 3 and as in full lines in Figs. 1 and 2, by the springs 12, 13, and 14 and serve automatically to clamp the respective rodsA and B, and thereby to lock the respective sash in whatever position they may be left.

Theim proved sash-lock,as above described, is equally applicable to windows with or without sashbalances, but is primarily intended and adapted for windows which are without sash-weights or their equivalent and where care must consequently be taken to provide against accidentally dropping the sash.

It will be seen that the parts of the improved device may be cheaply manufactured and that the same may be readily attached to a window without the aid of an artisan.

The respective pairs of clamping-levers d g and ef may change places within the housing C so that the inner paireandf will lock and unlock the lower rod A and the outer pair d and g will lock and unlock the upper rod B, if preferred, and other like modifications will suggest themselves to those skilled in the art.

Having thus described said improvement, I claim as my invention and desire to patent under this specification- 1. In combination with a pair of sash-controlling rods attached respectively to the lower sash of a window at or near its bottom and to the upper sash at or near its top and projecting across the parting-rail of the window, a rod-clamp ixedly attached to the window-frame at the level of the parting-rail and provided with a pair of clamping-levers for each of said rods and with interposed springs whereby said levers are normally held in effective position.

2. In combination with a pair of sash-controlling rods attached respectively to the lower sash of a Window at or near its bottom and to the upper sash at or near its top and projecting across the parting-rail of the window side by side, amd-clamp ixedly attached to a jamb of the window-frame at the level of the parting-railand provided with an outer pair of clamping-levers for one rod, springs for holding said levers normally in locked position, abutxnents for said springs, an inner pair of clamping-levers for the other rod, and a spring for the pair of levers last named interposed between them, each of said levers having a grip-hole to embrace the rod that is to interlock therewith and aslot which loosely embraces the other rod.

GEORGE L. LAMB.

Witnesses:

HARRY L. UNGER, CoRA SToU'rENoUR. 

